Shifts at higher than normal RPMs

hey guys looking for some answers here. I’ve got a 17 dclb OR, about 29xxx miles on it. So I noticed the last few weeks while driving the truck will shift at higher than normal RPMs. I’ll be cruising on the freeway around 60-70mph and the truck will be at 3000 RPMs, it’ll stay there until I either speed up or slow down then it’ll down shift. It does it around 40mph as well, hangs out in the 3000RPM range. Is this normal? It’s a auto transmission and completely stock too.

 

Being an automatic, does it have a button or something that might switch it into some kind of whacked out mode like for trailering, or offroading or something?